Costometer Rotating Mathematical Tables
Object Details
- Costometer Corporation
- Description
- The Costometer is a set of mounted mathematical tables designed to allow a payroll clerk who knows an employee's rate of pay and hours worked to simultaneously find his or her total weekly wage, deductions for federal and state unemployment taxes, deductions for Social Security taxes, and the net pay after deductions. The device was introduced in 1936 to assist business computing payrolls in the wake of the U.S. Social Security Act. It was copyrighted that year by Dean Babbitt and LeRoi E. Hutchings, with contributions to the design by Herbert Austin Brown.
- The instrument has an iron frame painted black and rotating paper tables on a continuous loop. Fabric and a metal plate cover much of the tables. A sliding window associated with each table is moved across it to select the column of numbers to be used. Numbers along the edges of the windows assist in reading the tables. In the center of the sliding plate is a face that represents 60 minutes and 12 hours, presumably to aid in converting time to metric units. A central dial rotates 360 degrees and is numbered from 0 to 9. Cranks for moving the tables are on the sides (one of 4 cranks is missing in this example). A switch for an electric motor is on the left side. The machine has a dust cover.
- A mark on a plate on the front reads: Costometer (/) Corporation (/) New York, N.Y. (/) Made in United States of America. A mark on a small plate at the base of the back reads: A100Z1019. A mark on the tables reads: Copyright 1936 by Dean Babbitt and L.E. Hutchings. A mark on the front toward the back reads: Costometer (/) PATENT PENDING.
- No patent corresponding to this object has been found. This example came to the Smithsonian from the collection of Victor Comptometer Corporation, and quite probably was originally in the collection of Felt & Tarrant Manufacturing Company.
- References:
- “Mechanical Calculation Moves On,” Scientific American, 156 (February 1937): p. 114.
- “Business Opportunities,” New York Times, August 30, 1936, p. F10. The same ad ran on the same page September 6, 1936.
- Location
- Currently not on view
- Credit Line
- Gift of Victor Comptometer Corporation
- ca 1937
- ID Number
- MA.323623
- accession number
- 250163
- catalog number
- 323623
- Object Name
- mathematical table
- Physical Description
- metal (overall material)
- paper (overall material)
- cloth (overall material)
- Measurements
- overall: 24 cm x 57 cm x 19 cm; 9 7/16 in x 22 7/16 in x 7 15/32 in
- place made
- United States: New York, New York
- See more items in
- Medicine and Science: Mathematics
- Mathematical Charts and Tables
- Science & Mathematics
- National Museum of American History
- Subject
- Mathematics
- Taxes
- Workers
- Record ID
- nmah_694424
- Metadata Usage (text)
- CC0
- GUID (Link to Original Record)
- https://n2t.net/ark:/65665/ng49ca746a5-3ced-704b-e053-15f76fa0b4fa
Related Content
There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page .
International media Interoperability Framework
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more.